Combined typewriting and computing



May 3, 1938. H. L. PITMAN COMBINED TYPEWHITING AND COMPUTING MACHINES Filed Aug. 2, 1930' 4 Sheets-Sheet 1 fiymorv I W May 3, 1938. H. PITMAN COMBINED TYPEWRITING AND COMPUTING MACHINES 4 Sheets-Sheet 2 Filed Aug. 2, 1930 INVENTOR= ATTOR kletk May 3, 1938. H. L. PITMAN 2,115,870

COMBINED TYPEWRITING AND COMPUTING MACHINES Filed Aug. 2, 1930 4 Sheets-Sheet 3 ATTOR Y.

y 1938. H. L. PITMAN 2,115,870

COMBINED TYPEWRITING AND COMPUTING MACHINES Filed Aug. 2, 1930 4 SheetsSheet 4 REAR Y/EYV Patented May 3, 1938 UNITED sures COMBINED TYPEWRITING AND COMPUTING MACHINE Henry L. Pitman,

Westficld, N. 1., assignor, by

mesne assignments, to Underwood Elliott Fisher Company, New York, N. Y., a corporation of Delaware Application August 2, 1930, Serial No. 412,610

60 Claims.

This invention relates to combined typewriting' and computing machines, such as the well-known Underwood bookkeeping machine, in which the numeral-type-keys set up elements of an index- 6 ing mechanism, which is used to run the corresponding digits into one or more totalizers at the cycling of a general operator, after the complete number is typed upon the work-sheet.

When passing through an adding zone, the 10 paper-carriage at every step displaces an indexpin-carrying bar, bringing its pins into the paths of pin-setting devices that are operable by the type-keys. The general operator thereafter drives the bars according to the settings of the 5 pins, and these bars are caused to rotate the register-dials. The pin-bars have trains that extend up in rear of the paper-carriage, and are operated seriatim by means of a tappet or dog .that is attached to the paper-carriage. A mag chine of this general description is seen in the patent to Hart, No. 1,190,171, of July 4, 1916. The present invention relates partly to improved means for displacing the pin-bars by the operation of the paper-carriage. 5 The principal objects of the invention are to provide a simple, inexpensive and reliable machine of the class referred to, and one of the aims is to improve the type of machine in which a single set of denomination-selecting trains is .30 operated by the carriage, and ramifies to several registers, or to several register-operating indexpin-bars. In this type of machine, there is employed a set of horizontal rock-shafts that extend across'the machine in its rear portion, and from 35 these shafts depend branches or arms, the latter arranged in sets, there being one set of arms for each set of pin-bars. their arms, however, are driven by means of a single set of operating arms provided upon the 40 shafts. These arms receive impulses from a single set of master-rods that extend down from a point near the paper-carriage at the rear of the typewriting machine. Hence, the carriage-tappet, in acting upon any 45 denominational train, operates through the rock-- shaft to vibrate simultaneously as many arms or distributors as there are registers in the machine,

and to advance or set the pin-bars of the selecteddenomination, so that while the paper- 50 carriage remains stationary, the operation of any numeral-key causes one index-pin-bar to be set for each of the registers. Similar operation may take place at every letter-feeding movement of the carriage through an adding zone. 65 cycling of the general operator, the typed and The rock-shafts and all At the Y indexed number is carried into all of the registers, although the carriage has traveled through but one zone, and has actuated only the master set of connections.

Each of the transverse rock-shafts carries a rearwardly-extending operating arm, and at their rear ends these arms form a transverse row, and rods extend upwardly therefrom terminating at their upper ends in novel vertically slidable jackshaving beveled tops capable of being pressed down seriatim by means of a beveled tappet which is mounted upon the carriage.

It is desired to adapt the mechanism for use with Underwood bookkeeping machines of standard construction, and for this purpose the extent of movement of the horizontal master-arms is made to equal the extent of movement of the pendent distributive pin-bar-setting arms. It is desired that the latter should terminate in a transverse level row at their lower ends, and that the master-arms should terminate in a row transversely of the machine, and also that the rods that extend'down from the jacks should also occupy a single transverse vertical plane; and to accomplish these results, said set of rockshafts is arranged in an inclined transverse plane. The rock-shaft arms in all of the sets are of graduated lengths, all being operated by equal movements imparted by the typewriter-carriage, and imparting equal movements to the indexpin-bars.

The first of the denominational trains that is operated by the carriage is the train of highest denomination, and the last is of lowest denomination. Accordingly, the master-arms upon the denominational rock-shafts are arranged in reverse order, their denominations proceeding vfrom highest to lowest towards the left. The distributing arms upon the same rock-shafts, however, are arranged in the natural denominational order, that is, proceeding towards the right from highest to lowest denomination. In other words, the master-arms have a transposed arrangement with respect to the distributing arms.

It is desired, during the power return of the paper-carriage, to avoid camming down the denominational jack-trains, and accordingly each train is made in portions, and by means of an automatic device one portion is separated from the other ineach train, and the jacks drop out of the way of the carriage-tappet.

The carriage-tappet is settable along the carriage, fitting between the teeth of a carriagerack. It is used also for carriage-tabulating purposes.

A further feature of the in lention relates to improved means for enabling one or more adjustable teeth or blades upon the paper-carriage to select a register or registers for operation in any computing zone. Register-selecting trains, one for each register, rise to the carriage, preferably at the rear of the aforesaid denominational indexing trains, to position to be operable by said carriage teeth or blades.

It has been explained that each denominational rock-shaft carries a number of distributive pendent indexing arms, one for each register. These distributive arms are connected by couplers which engage shoulders provided upon the pin-bars. The couplers for every register are normally disabled. Said carriage-teeth, however, select the cams, one cam being provided for each register-selecting train. The cams are grouped facewise at the middle of the machine.

The function of each cam is to operate its train and lift the set of couplers that belong to the register corresponding to the cam, so that the indexing for that register will proceed while the carriage is passing through any given computing zone. Each cam is in the form of a plate having a dwell portion, whereby the carriage-teeth are enabled to maintain the selecting trains in their effective positions throughout the zone. Hence, the number being typed may be computed in the desired register, while any one or more of the remaining registers remain idle.

Each register-selecting train may include an upstanding two-part rod which is thrust down by the cam-plate, and a lever extending forwardly from the rod and pivoted between its ends; its rear arm being thrust down by the rod, and its forward arm serving to lift the couplers to effective positions.

After passing out of the computing zone, the carriage-tooth rides off from the cam-plate, and the couplers for that register drop again to idle positions.

In order to provide for the selection of any two or more registers for operation in any one zone, the carriage may be provided with as many selecting teeth as there are registers, and these teeth may operate simultaneously to couple the selected sets of index-pin-bars with the rockarms, for displacing the pin-bars, so that the number being typed may eventually be run into all of the selected registers.

Any desired number of these adjustable register-selecting teeth may be employed, and they control the selection of registers for only one computing zone at a time. There may be arranged as many groups of adjustable registerv selecting teeth as there are computing zones on the work-sheet, and any desired number in each group for selecting any desired register or registers for the various zones.

The register-selecting cam-plates operate vertical rods arranged in a rearwardly-extending diagonal row. The cam-plates may be duplicates,

and interchangeable, and any one can thrust down its desired register-selecting rod in the diagonal row. The length of a register-selecting cam-plate is as great as the width of a computing zone on the work-sheet.

It has already been explained that an adjustable denomination-selecting dog is provided upon the carriage having means to fit in notches in a column-stop rod, and is combined with a carriage-tabulating column-stop. The same adjustable device is also combined with a registerselecting tooth or teeth, and is adjustable as a unit along the carriage, so that by one setting there is made the proper provision in respect to any given zone for tabulating, denominationindexing and register-selecting. This adjustable combination device includes a block that has a series of notches, said series extending rearwardly, and in the notches there may be introduced the teeth, which may be fastened by a pin passing through a hole in the block. These teeth may be set into any desired notches in the block, and for the purpose of bringing into operation any desired registers in the zone for which the combination device is set. The teeth may be reset in different notches from time to time. The combination device may be used in any zone, and a variety of them, with different teeth-settings, may be kept on hand.

When tabulating, the carriage is brought to rest a little in advance of its true typing position. After the tabulating key is released, the carriage has a short drop to typing position, and during this short drop the first denomination jack is depressed by the carriage-tappet.

The set of carriage-tabulating decimal-stops is so located with relation to the set of denomination jacks that the carriage, upon being tabulated, reaches the proper point to begin the in dexing for the adding operation.

During the return of the carriage by a powerdrive, the denomination jacks may all drop out of the path of the tappets on the carriage. There is provided a carriage-return key, and the usual power train is operated thereby to control the return of the carriage. This train is connected to a linkage which swings the upper set of the vertical denominational links or rods away from the lower set, where they remain while the carriage is returning. This disconnection of the denomination train takes place when the carriage is being tabulated. When the tabulating key is released by the operator, the denomination mechanism is restored to working position.

The dropping of the denomination jacks also occurs automatically at the operation of the caseshift key of the typewriter.

It will be remembered that both the train of denomination-indexing devices and the train of register-selecting devices extend from the upper part of the typewriter down to the adding mechanism in the adding base under the typewriter. It is desired to take the typewriter off from the adding base, and according to the present improvements an advantage is gained by having the vertical rods in each group consist of upper and lower portions separable from each other. Each upper portion extends down back of the typewriting machine, and each lower portion extends up from the base. The typewriter is clamped upon the base, and hence when it is desired to remove the typewriter to give access to the adding mechanism it is only necessary to release the clamps, and then lift the typewriting machine right off from the base, without the necessity of giving attention to the detachment, of denomination and register selecting trains.

Another feature of the invention is the automatic dropping of the register-selecting camplates during the cycling of the general operator of the adding mechanism. For this purpose, there is connected to the general operator shaft a disk, which is provided with a notch on its periphery. This notch is normally occupied by a roll provided upon an arm, and the arm disconnects the lower members of the registering the cycling of thegeneral operator, permitting the upper members to drop, together with the cam-plates.

This disconnectingmechanism is mounted in the adding base, where it is operable by the general operator, while the denomination-jack disconnecting device is mounted in the typewrit -ing machine, where it is always under the control and is lifted on from The connection from the outermost register to the central group includes a rock-shaft carrying an arm to lift a bail, in which are carried the free ends of the couplers that set forward the index-pin-bars. The raising of any set of coupiers connects its set of pin-bars to the indexing jacks at the paper-carriage.

The coupler-lifting bails for the second and other registers are lifted by means 'of arms which extend to the register-selecting rods. The registers at the sides and middle of the system are thus properly connected to the central controlling group rods.

The adjustable combination device, which carries the tabulating stop, the denomination-selecting dog and the set of register-selecting dogs, is supported upon two racks that are placed one behind the other on the paper-carriage, the device fitting in the notches in both racks. The rear end of the device has a ridge upon its top, to mesh with the teeth in the under side of the rear rack.

At the middle portion of the machine, where the denomination jacks and the register-selecting cams are located, there is provided a fixed horizontal guide or key, which may be in the form of a flange bent forwardly from a vertical fixed plate;' and each of the combination devices has a notch in its rear end, which fits upon said key, thereby insuring proper co-operation of the device with the register-selecting cams, as well as with the denomination jacks. In front of the devices, there is provided upon the carriage a scale, and the upper prong of each device points to said scale to facilitate adjusting the device along the carriage.

Provision is made for key-locking jacks to occupy punctuation spaces in the row of jacks.

When the general operator cycles, the numeralkeys of the typewriter are automatically locked against operation. The keys are also locked while the carriage is returning.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a rear perspective view, showing the method whereby the general operator effects disconnection of the denomination-selecting trains. This view also shows trains for locking the digitkeys at the punctuation spaces.

Figure 2 shows an index-pin-bar provided with a hardened shoulder.

Figure 3 is a sectional side elevation taken about centrally of an Underwood bookkeeping machine reconstructed according to the present improvements.

Figure 4 is a perspective front view of a special bar 31 beneath rock-shafts 34.

framing that is provided for guiding various denomination selecting members and registerselecting elements. This figure also shows a portion of the connections to the carriage-returning train.

Figure 5 shows some of the mechanism seen at the rear portion of Figure 3, and illustrates the method of selecting a register.

Figure 6 illustrates the manner of fastening a distributing arm 61 to its rock-shaft 86.

Figure '7 is a sectional elevation of the mechanism seen at the rear of Figure 3, and shows the method of dropping-the denomination Jacks out of the path of their tappet.

Figure 7' shows the preferred provision of roller at a point of breaking of the denominationj selecting rods.

Figure 8 is a rear perspective elevation of the denomination-selecting and register-selecting mechanism and paper-carriage.

Figure 9 is a front sectional elevation, showing the carriage being arrested at the tabulating operation, and showing the denomination Jacks dropped for clearance.

Figure 10 isa sectionalfront elevation, showing a register-selecting cam-plate depressed by the blade provided upon the paper-carriage.

' Figure 11 is a front sectional elevation, showing how the denomination jack is depressed and held down by the carriage-tappet.

Figure 12 is a rear sectional elevation, showing divergent register-selecting trains.

Figure 13 is a perspective rear view of a combination device, including a tabulating stop, a denomination tappet and a register-selecting block with teeth adjusted therein.

Figure 14 is a perspective rear view of the transverse denominational rock-shafts, the pin-bars set forward thereby and also the register-selecting elements in Figure 12.

Figure 15 is a' sectional elevation of parts seen at the rear portion of Figure 3, showing the disconnection or breaking of the register-selecting trains, etc. 1 I

Numeral-keys depress levers 2|, which vibrate bell-cranks 22 and swing type-bars 23 up against a platen 24.

The platen is mounted upon a platen-frame 25 that is shiftable up and down upon a carriage 26, traveling upon rails 21, 28. letter-space rack 29 to operate the usual escapement-wheel train, which is represented by a pinion 30. As usual the escapement movements of said train are controlled by a universal bar (not shown) that is operated by heels 3| on the type-bars.

From the numeral-type-key depend indexing links 32 to depress arms 33 upon horizontal rearwardly-extending rock-shafts 34. Each rockshaft has an arm 35, to which is pivoted a transverse horizontal rod 36, forming part of a parallel motion which also includes a transverse horizontal These bars 31 are depressed at the strokes 'of the keys.

The carriage has a Said bars 31 selectively depress index pins or members 38. These pins project from the top edges of bars 39, there being one pin on each bar 39 for each depressor-bar 31. There is one index-pin-bar for every dial in each register 40,

there being five groups of pin-bars indicated'at Upon the operation of any key the type-bar is swung to the platen to print, and its linkage 33, 31 presses down a corresponding index-pin 33. The pin-bars are normally retracted, so that the pins are normally inoperable. by the bars 31, but, by means which will presently be described, the pin-bars 33 are advanced, one denomination after another, by the action of the paper-carriage. 23, so that all the pins in one denomination will take positions under the depressible setting bars 31. The indexing or setting of a pin causes it' to protrude from the bottom of the bar 33, into the path of a general operator 35, which duly advances and engages all of the. set pins for the purpose of driving the dials as usual.

The paper-carriage is driven by the usual spring barrel 33, Figure 5, with sufiicient force to enable it to advance five pin-bars 39, one for each of the five registers; and this happens at every step of the carriage in each computing zone.

Feeding dogs which control the movements of the escapement-wheel 31 in said Figure 5 are not shown, but they have the usual operation, to feed the carriage through the computing zone.

For setting forward the index-pin-bars 39 serlatim, there is provided upon the paper-carriage one or more denomination-selecting tappets 38, Figure 13, each in the form .of a cam, which depress one after another denomination bevel-top jacks 33, forming a row at the rear of the typewriting machine. Each tappet 33 is universal to all the denomination-trains. Only a single tappet is in use while the computing zone is being traversed by the carriage. A single tappet is used for each zone. Thus the tappets operate one at a time. As many tappets 43 may be employed as desired; and they may be adjustably carried upon racks 53, 5| mounted upon the carriage 23, as will presently be explained. The action of a tappet in depressing the jack is seen at Figure 11. The jacks are in the form of verti- 1 cal slides, guided at their upper ends in slots 52 formed in a horizontal plate 53 fixed upon the machine-framing. At their lower ends the jacks are formed with stems 54 that work in guideholes 35, forming a row in a fixed guide-plate 33, Figure 4.

The bottom of each denomination-jack engages the top of a vertical rod 51 to press it down. These rods, forming a transverse row, are guided at their upper ends in holes-53 in guide-plate 33, Figure 4, and have upon their lower ends vertically-adjustable heads 59, into which the lower ends of the rods are threaded and secured by screws 33, Figure 3. The heads 59 are guided in holes 3| in a horizontal transverse plate 32, Fig

ures 3 and 4.

Said rod-heads 53 engage the tops of a row of upstanding links 33, pivoted at their lower ends at 33 to horizontal rock-arms 35 fastened upon horizontal transverse denominational rock-shafts 33. From each of these rock-shafts ramify pendent distributing arms 31, whose lower ends are pivoted to forwardly-extending couplers 33 that cause the index-pin-bars 39 one by one to take advanced positions preparatory to digit-indexing. This takes place in any one or more selected groups, as the carriage steps through the computing zone. The method of selecting the groups will presently be explained. A corresponding indexpin-bar 33 is set forward by each train operated by the beveled tappet l8 and including coupler A part 31 taken with 33 forms a jointed thrustbar operable by its lack '43, and connected at its national order of the jacks 33 is inverted; and j the same is also true oi the denominational trainelements 31, 33 and 33. At Figure 14, the uppermost arm 33 and shaft 33 are of lowest denomination. Upon the next lower rock-shaft 33 the arm 33 is placed at the left, viewed from the rear. Upon the shaft under that, the arm 33 is placed still more to the left, and so on, at Figure 14. 'But upon the set of rock-shafts 33 the arms 31 have a transposed arrangement, the arm 31 on top shaft 33 having an extreme leftward position (viewed from the rear at Flgure l4) the next lower arm 31 being placed at the right, and so on through each set of arms 31.

It will be seen that the denominational order of the arms 31 in each group is normal. Each group of distributing'arms 31 forms a diagonal row extending downwardly from left to right at Figure 14. The extreme left-hand arm 31 at Figure 14 has lowest denomination; the next lower arm has the next higher denomination, and so on. This arrangement gives the distributive pin-bar-setting arms 31 the required order, without the interposition of the transposition mechanism.

The denomination-rock-shafts 33 are arranged in a row or tier; which extends upwardly and forwardly, whereby it is contrived to have the lower ends of distributing arms 31, which have graduated lengths, terminate about on a level, so' that the couplers 33 may occupy a horizontal row; while the rear ends of master-arms 33, also graduated in length, terminate in nearly a vertical transverse plane, so that the train-elements 31, 33 may form transverse rows. By the diagonal arrangement of the rock-shafts, and by the graduation of the lengths of the arms 33, 31, equal movements of the jacks 48 are caused to produce equal advance movements of the index-pin-bars 39, since the proportions of arms 31 to arms 35 are maintained throughout the system. Thus the graduation of the arm-lengths, with the diagonal arrangement of the tierof shafts, permits arrangement of the couplers 33 in a single level row, and also permits the rods 31 and 33 to form a single transverse row.

Each transverse denominational rock-shaft 33 extends entirely across the machine, and five pendent distributive arms 31 branch therefrom, one arm for each computing register, the arms 31 forming five groups in a transverse row. It results that each denominational train 33, 31, 33, 35, 33, through its five branches 31, controls five pin-bars 33, one in each group, Q that the stepping of the paper-carriage 23 causes all five pin bars to be displaced or set forwardly to digitindexing positions. Each denomination-train extending down from the paper-carriage 23 therefore answers for all five of the registers.

For supporting the rock-shafts 33 against springing, and for facilitating assembly and disassembly, there may be erected end brackets 1|, 12, Figure 14, and spaced brackets 13, the latter intervening between the groups of pendent dls tributing arms 31. All of the brackets may be erected upon a base-plate 14; each bracket having feet 15 fastened down by screws 18. The intervening brackets 13 have open diagonal slots 11 in which the shafts may be detachably seated and the end brackets may have holes 18 into which the ends of the shafts 68 are thrust. The brackets 1 I, 12 are provided with confining plates 19 covering and confining the ends of the rockshafts 68, and detachably secured by screws 88, whereby displacement of the shaft is prevented and convenient detachment thereof is permitted; while the plate 14, with its brackets and shafts, together with the arms thereon, may be constructed as a unit for fastening down upon a platform 8| that forms part of the adding-machine base 82 upon which the typewriting machine stands. The brackets may all be connected and supported by a front tie-rod 83, fastened to ears on each bracket by screws 84.

The couplers 88 may thrust against shoulders 85 formed on the pin-bars 39 at the rear thereof. Normally all of the couplers 88 lie depressed, and hence they are moved forward idly seriatim as the carriage 26 traverses the computing zone.

The tips of the depressed thrust-links (Figure 15) pass idly under the shoulders 85 or 88.

For the purpose of bringing the sets of couplers 68 into use and thereby selecting the registers appropriate to each computing zone, each set is provided with a lifting and depressing yoke, including a transverse bar 81 having guide-holes 88 to lift and lower the couplers. These yokes or bars 81 have pairs of rearwardly-bent arms 88 to form bails, the bails being similar to one an other and arranged in a row across the machine. The bails are pivoted at 90 to brackets H, 12, 13, and also to supports I09, fastened on the baseplate 14.

Each yoke 81, 89 is universal to its set of couplers 88, and forms part of a register-selecting train that extends to the paper-carriage, whereby the latter is enabled to lift the couplers 88 into effective positions in any one or more selected sets, and to maintain the couplers elevated throughout the traverse of the computing zone by the paper-carriage.

At the upper end of each register-selecting train is a cam-plate 93, which is in the path of a register-selecting blade or tooth 98 carried by the paper-carriage 28. There are shown five of the register-selecting cams 98, one for each register. They correspond with the five coupler-setting bails 81, 89. Any one or more of the five cams 93 may be depressed and held down by the carriage throughout its traverse of the computing zone, and the corresponding register or registers thereby brought into use.

Each register-selecting train includes a carriage-operated cam or cam-plate 93, and a thrust-rod that extends down from the camplate and has at its lower end a head 98, which rests upon the top of a vertical link 91. The lower end of the link is detachably pivoted to the rear end of an arm 98, the latter connected to a forward arm 99. The arms are supported some upon a transverse shaft I00, and some upon shaft I08, these shafts being mounted end to end in the rear ends of middle brackets or supports 13, I09.

The forwardly-extending arms 99 are connected by links IM to bail-arms 89, to lift the same and hold them elevated while the carriage passes through the zone. ly-thrusting links 91 forms a row at the middle of the machine; while the bails 81, 89 form a row extending preferably the entire width of the ma- I link IN to the extreme The set of downwardchine. The lever-arms 88, 88 have a divergent relation, the arms 88 being compactly placed side by side Just in front of the links 81, while the arms 88 are disposed at widely-separated points across the machine.

At Figure 12 the first register-selecting thrustlink 81 is pivoted to an arm 98, and the latter is bent to form a cross-bar I02 terminating in an arm 88, forming a bail; thus locating said arm 89 properly with respect to the middle of the five registers at Figure 14.

The second register-selecting thrust-link 91 at Figure 12 is connected by a cross-bar I03 to its arm 99, forming a bail within which is nested- I08 which is secured by a set-screw I05 to the.

rock-shaft I00. The latter is supported at one end in a bracket 13, and it is also supported in arms I08 that extend rearwardly from supports I09. The rock-shaft I08 is operable independently of the balls which are loosely mounted thereon, and upon its outerend is fastened one of the arms 88, whereby it is connected to the left-hand bail 81, 88, to lift and lower the first set of couplers 88, at Figure 14 The fourth thrust-link 81 at Figure 12 is connected by a hub I01 to the rock-shaft I08, which is independent of I00, but is in line therewith, and is supported in arms I08 on the two righthand supports I08, and also in middle bracket 13. A forwardly-extending arm 99 is fixed to the right-hand end of said rock-shaft I08, Figure I8, and extends forwardly and is connected by a right-hand bail 81.

The extreme right-hand thrust-link 91 at Figure 12 is connected to an arm 98 that is connected by a cross-bar I I0 to a forwardly-extending arm 88, the latter connected by a link IM to the next to the last bail 81 at the right-hand portion of Figure 14. Hence, any coupler-bail 81 may be lifted or lowered independently of the others, under the control of the paper-carriage.

The transverse register-selecting cam-plates 93 are parallel and arranged on edge one behind another at the rear of the typewriter, and may be used selectively by the aid of the attachable blades or teeth 84 which fit into notches or seats III, the latter forming a row in the under side of a block III, that extends rearwardly from the denomination-selecting tappet 48. A registen-selecting blade or tooth 94 is inserted in any notch II I, to predetermine the register that is to be brought into use. Two or more teeth 94 may be used simultaneously, so that any number of the registers may be brought into use while the typing is being done in any column on the worksheet.

These teeth 98 are short and fit closely in the notches I I I, and are held by a securing pin II 3 that is threaded at its end at I and screwed into a threaded hole in the forward end of the block H2, and will not work loose. Each of the register-selecting teeth 94 has beveled corners IIS, and each cam-plate 83 has similarly-beveled top corners II8, to enable the tooth to cam down the cam-plate 93. These cam-plates are guided in upper and lower pairs of racks I I1, II8.

In the organization of the machine, the abovedescribed set of column-selecting vertical rods 6 1 is arranged at the back of the set of vertical denomination-determining master-rods 51, and the latter. are placed back of the usual Underwood vertical d'ecimal-tabulator plungers .or stops H8, which are disclosed .in the McLaughlin Patent 956,114, of April-26, .1910, and also in said pat nt to Hart, which also shows various features of the indexing devices, registers, and other computing mechanism, of the well-known Underwood machine, upon which the present invention includes improvements.

The decimal-tabulator vertical plungers or stops II 9 are disposed at letter-space intervals, to co-operate with column-stops I20 mounted adjustably upon the carriage 26. The columnstop-device I20 is forked to tit upon rack the bottom part of the device consisting of the column-stop proper, and the upper part catching over the top of the rack. The decimal-stops IIQ are operated by keys I2I and levers I22, whose rear ends lift the plungers or stops I I9.

Each column-stop I20 is preferably provided with a denomination-selecting tappet 48 for the adding and indexing mechanism, and alsowith a block II2 for'the register-selecting mechanism.

The column-stop, the denomination-selector and the register-selector may be united and form a unit, Figure 13, which may be adjusted along the carriage to correspond with the position upon the work-sheet of the column in which the typed numbers are to be added. The carriage 25 is arrested by the column-stop in position for the depression by tappet 48 of the selected denomination-train 43, etc., and the register-selecting cam-plate 93 is depressed by the blade 94.

Each block I I2 has upon its top a steadying fin I23 to fit in a notch in'the bottom of the supporting rack 5|. The tabulator plungers or stops [I9 are mounted in a vertical frame I24, resembling the usual Underwood frame seen in said patents. This tabulating-stop-frame I24 is secured to the rear wall I25 of the main typewriter-frame I25, Figure 3.

The register-selecting cam-plates 93 are confined face to face between and mounted upon opposite vertical walls I25, I21, which carry the slotted guides H1, H8 for said cam-plates 93.

Said vertical walls I25, I21 rest upon a crossmember I28, to which they are secured. Said cross-member is formed as at 250 to clear the rods and has forwardly-extending end arms I29 which are fastened at I30 to a plate I3I, the latter being detachably fastened across the back of the decimal-tabulator-frame I24.

The upper portions of the walls I25, I21 are provided with angular brackets I32, Figure 4, which are detachably fastened to posts I35, which are secured by screws I35 to the cap-plate 53, which is-held by screws I38 upon the top of the tabulator-frame I24. The plate has notches I39 along its front edge to match notches I40, the latter formed upon the rear edge of a plate I, secured by screws I42 to the top of the tabulatorframe I24; the front and top notches co-operating to guide the vertical tabulator-stops I I9.

Said cap-plate 53 is provided at its rear edge with a set of parallel guide-notches 52 for guiding the upper ends of the denominational jacks 49; and the latter are confined by a detachable plate I43, screwed to the rear faces of the posts I35. Each jack is provided with a shoulder I44 beneath the cap-plate 53, to limit the upward play of the jack.

It will be seen at Figure 4 that the plate I43 surmounts the detachable brackets I32, and the main walls I25, I21 rise nearly plate I43.

The upper ends of the register-selecting rods to the top of the 55 are guided by holes in a plate or flange I45 that is bent forwardly from vertical plate I45, which is detachably secured by screws I41 upon the rear edges of the side walls I25, I21.

It is desired that the register-selecting rods 55 stand side by side, to form a straight transverse row at their lower ends; while at their upper ends they are operable respectively by the several register-selecting cam-plates 93, which are placed one behind another. In consequence the rods 55 are given an echelon arrangement at their upper ends, the guiding holes in the plate I45 being so arranged.

The cam-plates 93 are detachable and interchangeable, and are so guided for vertical movement that any of them is capable of thrusting down its associated rod 95 without binding the cam-plate. To give the cams long bearings for this purpose, each cam is provided with a pair of downward guiding extensions or stems I48, fitting in the lower guide-comb I I8, the stems extending down below the working or rod-engaging lower edges of the cam-plates 93. 1

For a steadying device or support the upper end of the plate I45 ,is bent forwardly, making a key I45 that extends the width of the computing zone. It is so placed that it will enter slots-I49 that are provided upon the rear ends of the register-selecting blocks II2. This insures the proper engagement and accurate co-operation of the teeth 94 with the cam-plates 53, and of the tappets with the jacks, but without binding the paper-carriage 25.

It will be seen that the racks 50 and 5I extend between and are mounted upon arms I50, I5I, Figure 8, that project rearwardly from the rear bar I59 of paper-carriage 25.

The rack-bar 5i may beadjusted endwise, be-

,ing secured at its ends by nuts I50 upon eccentric studs I5I rising from rotatable bosses I52, that are secured by screws I53 upon the rear ends of the arms I50, I5I. The bar 5I may be shifted endwise as far as is necessary, when the screws I53 have been loosened, and the bar may be fastened in position by tightening the screws I53. The ends of the rack 50 are held down upon the arms I50, I5I by means of nuts I54 threaded upon the tops of studs which rise from said arms. There is provided at Figure 8 a scale I55 by which to set the tabulating, denomination-selecting and register-selecting combinations. The scale is adjustably supported by slotted ears I55, carried by the same studs as nuts I54. The ears are held down by the nuts.

In operation, after the work-sheet is passed around the platen 24, the scale I65 is utilized in setting the combined column-stops, denomination-selectors and register-selecting blocks I20, 48, H2 along the racks 50, 5I. Each column-stop may have one or more register-selecting blades 94, and these may be placed in any selected notch III on the block II2 to determine which register or registers are to be operated in each paper-carriage by means of a universal bar I55,

which is operable by shoulders I55 on the. decimal-stops I I9. Theuniversal bar I88, by means of the usual link I10, rocks a lever I", on the front end of which is a roll I12, that lifts the carriage-rack 29 from the .pinion 30 that is connected to the usual escapement-wheel 41. The carriage 26 is shown at Figure 7 in released condition.

The carriage then runs under the tension of its driving spring barrel 48, until the first columnstop I20 engages that decimal-stop I I9 which was projected by the key IZI. The operator releases the key III, and the stop II9 isreturned by its spring I; while the carriage is restored to the control of pinion 38 and escapement-wheel 41. The machine is now ready for typing and computing the first number.

By this time the register-selecting tooth or teeth 94 have depressed the appropriate registerselecting cam plate or plates 93;'this depression having been effected during the final operation of the tabulating movement of the carriage just described. Accordingly one or more rods 95 are depressed, to carry down certain of the links 91 and vibrate the corresponding lever-arms 98, 99, to swing up the connected balls 81, 89, to lift the selected sets of horizontal couplers 88 to effective positions behind the heels or shoulders 85 88 on the pin-bars 39. This is preparatory to typing the number upon the work-sheet. When the number is typed, the digit-pins will be set accordingly for the selected registers. As each type-key is depressed, it presses down the lever 2I and vibrates forwardly the bell-crank 22, and swings the type-bar 23 upwardly and rearwardly to strike against the work-sheet on the platen; the shoulder 3I on the type-bar operating the usual universal bar (not shown) to control the carriage-escapement-wheel 41..

In typing the number, as each numeral-typekey 28 is depressed, its link 32 depresses arm 33 and rocks the rock-shaft 34, of which one is provided for every numeral-key.

The-arm 35 is rocked and thrusts endwise the horizontal transverse link 38 of the pin-setting linkage, thereby depressing the corresponding transverse bar 31 of the same linkage, for the purpose of depressing the index pin 38 (Figures 8, 15) that the selected key indicates.

It will be perceived at Figure 3 that the transverse bar 31 normally stood above the spaces between the pins 38; but it will be understood that upon the conclusion of the described carriagemovement, thetappet 48 operated the proper denomination-train and advanced the pin-bar 39, so that during the operation of said numeraltype-key 29, said pin-bar stands in an advanced or forward position, with all of its pins directly under the bars" 31.

It will be seen at Figure 13 that the dog 43 has broad camming surfaces, and it will also be seen at Figure 11 that the tips I18 of the jacks 49 are beveled correspondingly, so that the carriage meets with but little resistance in camming down the jacks 49 as the carriage proceeds step by step. At Figure 11 is shown the one of the jacks held depressed while the carriage stands in the described typing position. By the depression of the jack 49, the link 51 is thrust down together with link 83, arm 85 is depressed, rock-shaft 86 is rocked, and arm 81 is swung forwardly together with the elevated coupler 88, thereby thrusting forward the pin-bar 39, together with the indexpins 88 thereon, the entire train remaining in this operated condition as long as the carriage remains stationary. Hence by depression of the key 28, the digit is printed and the index-pin 38 is set.

It will be perceived further that at the justdescribed operation an index-pin 38 may be set for each of several selected registers, depending upon how many register-selecting teeth 94 have been placed in the first adjustable block H2, and what positions these teeth occupy in the notches II I in said block. If there are several teeth 94 in place, then several of the cam-plates. 93 are depressed, and several register-selecting trains are in effective positions, and consequently there are several of the pin-bars 39 set forwardly, one for each register. The forwardly-displaced pin-bars are of the same denomination in all selected registers, so that there are as many pins 38 selected and depressed in the desired denomination as there are register-selecting trains brought into use at the time by the teeth 94 in the block I I2.

At the completion of any carriage movement at any point in the computing zone, the pin-bar-setting cam 48 depresses a jack 49, and, by means of the links 51, 63 and arm 85, the corresponding rock-shaft 66 is rocked, andfive branching arms 81 are rocked forwardly, operating five couplers 68. Some of these couplers may move idly, but the others, being under the control of the register-selecting teeth 94 and hence being in elevated positions, are thrust forward effectively, to advance the pin-bars 39 against the tension of springs I11, thus bringing the pins 38 to setting positions, where they remain as long as the carriage remains stationary.

Upon the relief of the numeral-key 28 from pressure, the type-bar 23 swings back tonormal position, and the carriage 28. is permitted to escape and feed for a letter-space distance. The denomination-selecting dog 48 releases the jack 49, and springs 10 lift the links 51, 83, and restore the arms 65 and rock-shafts, together with the arms 61, pendent from said rock-shafts, and

1 thus carrying backwardly the projected couplers 68 and permitting the springs I11 to return the pin-bars 39 to normal positions, together with both set and unset pins 38 thereon.

It will be understood, however, that the register-selecting trains will remain set under the control of the blades 94, and that said trains will continue set throughout the computing zone, or as long as said teeth 94 ride upon the top edges of the register-selecting cam-plates 93, Figure 10.

During the letter-feeding movement of the carriage to the left from one denomination to the next, just referred to, the cam 48 engages and depresses the succeeding jack 49, and, by means of the jack-train, thrusts forwardly the next pinbar 39 on the right, or of next lower denomination; so that when another digit-key 20 is operated, the transverse setting bar 31, that is connected to said key, depresses a pin 38 in each of the bars 39 that are set forward by the couplers 88 of the various distributing arms 81.

In this manner the typing and indexing proceed until the number is typed, whereupon the tooth or teeth 94 ride off from the register-selecting cam-plates 93.

After the typing of the number in the adding zone is completed, a general operator is brought into use, either by hand or by electric motor (operated by the usual key, not shown), said general operator including the usual cross-bar 45, which moves forwardly and engages all of the depressed pins 38, Figure 15, and thereby drives forwardly the pin-bars 39, causing the racks 4| on their the dials 48; whereupon the general operator returns, and, by means of the hardened lugs 88,

, restores the pin-bars 29 to normal positions.

-be all the same, or all dissimilar if desired, or one register may be operated in all the columns. while a variety of registers are operated in some of the columns, and other registers in others, to accomplish any desired result. In this manner the typing and computing proceed until the line of writing is finished.

If desired, the carriage can be returned by hand. During the return of the carriage by hand, the denomination-selecting tappets 48 may ride back idly over the denomination-jacks 49, depressing them one after another, and operating their trains idly. The register-selecting blades 84 in each block II2 may also engage the zone-cams 93 and depress them idly in the successive columns. together with their trains. It will be seen that if it is desired at any time to step the carriage back to any point to correct an error, the selecting tappet 48 will, at the desired point, depress and hold down the denominationtrain, while the tooth or teeth 94 will depress and hold down the desired register-selecting trains It is preferred, however, in practical use, to return the carriage by means of a motor-key I19, with means controlled by said key for clearing the denominational tappets 48 as they pass through the successive adding zones. Depression of the carriage-return key I19 rocks a bell-crank I88, having an arm I M, Figure 3 the tip of which engages a nose I82, and thereby lifts a latch I83 free of a catch I84. This permits a spring I85 to snap or engage latch I89 rearwardly, thereby vibrating an arm I86 and rocking a horizontal shaft I81. From said rock-shaft there is pendent an arm I88, to the lower end of which is attached the end of a switch I89, which is caused to close the circuit to the usual carriage-return motor (not shown). At the same time a clutch I98 is closed, enabling the electric motor to drive a car -riage-returning pinion I9'I that meshes with carriage-rack I92. Hence the carriage is returned for beginning the typing of a new line.

The clearing of the denomination-tappets 48 is effected in the following mannerat the return of the carriage:

Upon said rock-shaft I81 is fixed an arm I93, connected to a pull-link I94, which at its rear end is connected to another pull-link I that is pivoted to an arm I96 upon a'rock-shaft I91, the latter having a' horizontal arm I98, upon which is fixed a cam I89 'to engage a pin 288 that is provided in the lower end of a ball which guides the denominational master-links 51 at their lower ends.

This bail comprises a pair of arms 28I, connected to their bottoms by horizontal cross-bar 82, the latter having the guiding slots 8i for the lower ends of heads 59. The depression of arm ,11s,s7o forward ends to rotate the pinions 42 and drive I88 cams the pin 2 98 forwardly together with the bail-arms 28I. and the cross-bar 82 swings the lower ends of all of the upper rods 51 forwardly clear of the upper ends of the lower links 82. Hence when the denomination-tappet 48 rides over the Jacks 49, it will not contact therewith, because the upper links 51 and the jacks have dropped, being no longer supported upon the tops of the links 82. Thus the carriage is'returned at the beginning of the line without interference from the jacks 48.

The heads 59 upon the links 51 may be adjusted by turning them up or down upon the threaded lower ends of the master-rods 51, and securing them by the screws 68, so that each will have a proper contact with the top of its under link 63.

It will be understood that upon the completion of the carriage-return, the links I95, I94 and the arm I98 are restored by spring 282, thereby camming pin 288 rearwardly; and that the rods 51.

and jacks 49 are lifted by reason of the camming reaction of the beveled lower tips 283 of the heads 59 upon the beveled tops 284 of the links 92, Figures 1 and 15,

Upon the paper-carriage is a motor disabling tappet 285, which is effective, upon the completion of the return of the carriage, to strike a cam 286, Figure 3, in the usual manner, to vibrate a rock-shaft 281 and swing forwardly an arm 288, and thereby, by means of links 289, 2I8, to rock forwardly an arm 2 on horizontal rock-shaft 2I2. This operates to release arm 2I3 and unclutch I 98 in the usual manner. An arm 2I4, pendent from the rock-shaft 2I2, at the same time swings rearwardly, and, by means of a link 215 and arm 2I6, rocks the shaft I81 to open the switch I89 in the usual manner. The

'latch I88 is thrust forward by the rock-arm I 88,

and the nose I82 rides idly over the top of the operating arm I8I, being pivoted. The latch I83 catches again upon the catch I84 as usual. (See Hart Patent 1,238,908.)

It is also customary for the carriage, when completingits run in letter-feeding direction, to start the carriage-returning motor automati cally, and there is usually provided for this purpose a part 2| 1 which thrusts down a link 2| 8 and vibrates a lever 2| 9, lifting the latch I88 by means of a pin 228 thereon, to permit switch I89 to be closed and the clutch I98 to be also closed.

The foregoing disconnecting link I95 is pivoted at its forward end by a pin-and-slot connection Hi to the upper end of an arm 222, which is rigid upon the rock-shaft 223 of the tabulator universal ,bar I88, so that every time that the carriage is released for tabulating purposes, the rods 51 are disconnected from the links 63, so that the rods 51 and the jacks 49 may drop out of the path of the advancing denomination-selecting dogs 48 at the carriage-tabulating oper- -the case-shift mechanism. The platen-frame 25 has a roll 224 that runs upon an up and down shiftable rail 225,mounted upon a frame 228 that rocks upon a transverse shaft 221. Fixed upon said shaft and extending rearwardly thereof the arm.

. tened by screws 233 to a block 23] that is rigidly fixed to the rock-shaft 221 by means of a yoke 232 thereon. The screws 239 pass through slots 233 in the arm to permit endwise adjustment of the latter. The lower end of the link 229 is slotted at 234 to permit the motion of the arm independently of the link-229 at certain operations The upper ends of the pendant arms 2 are pivoted at 235 to ears 235 bent down from fixed plates 231 underlying the plate 55. The side arms 2!" are additionally joined by cross-bars 233, so that precision of movement of the links 51 forwardly and backwardly is assured, and the lower ends thereof are normally maintained in accurate relationship to the tips'of the links 53.

Said returningvsprings 10 for the denomination-trains lift up the links 53, and rockthe arm 55 and the rock-shaft 55 as far as they can go, that is, until they are arrested by means of stops 239 formed upon the denomination-couplers 53, and pulled by the springs 10 back againsta stop in the form of a cross-bar 240 joining the bail-arms 39 of the middle bail only. These stops 239 may be pressed out from material of the couplers 63, .or otherwise.

These stops 239, Figures 3, 5, 7, 15, are provided upon all of the couplers 63 in the system, and in all cases serve to prevent the couplers from advancing too far, especially when they are depressed and advancing-idly, as at Figure 15. These stops 239 encounter the front bars 31 of the bails, which prevent the idling couplers 69 'from advancing so far as to lie directly beneath the shoulders 85, Figure 15. Hence it is rendered impossible for the depression of a. registerselecting cam-plate 93 to become blocked on its downward movement. Should a coupler 68 be in the Figure posltion at the time that any zone-cam 93 is being depressed, the ball 39 will rise, together with the couplers thereon, and any selected pin-bar 39 will be cammed forwardly, the rear corner of its shoulder 35 or 86 being beveled, as at 24f, for this camming motion. The coupler may be correspondingly beveled, as shown at Figure 5.

The arms 61, at Figure 6, may be secured to the rock-shafts 65 by the method of forming a spherical depression or seat at a spot in the rockshaft and setting a ball 242 in the seat. The arm fits upon the rock-shaft, but has a notched projecting portion 243, so that the ball interlocks with the arm and the rod. Said notch is originally oversize, so as to permit the bail to be inserted in the seat; After the ball is in place the projectingpart 243 may be pinched, to lock the ball permanently in position in the seat, and to secure enough friction to prevent the arm from slipping along the rock-shaft. This can be done by pliers 244. If desired to further increase the rigidity of the arm 61 on the shaft 56, a drop of solder may be fixed around the shaft 66 and ball 242 at each side of the arm 51.

After the conclusion of the setting of pins 33 and the starting of the cycling of the general -ent 1,190,171.

position, and the link 259 operator, there is no further reason for the register-selecting balls 31, 33 to remain elevated, and provision is made whereby the general op erator depresses all of said balls and insures that the couplers 33 shall be dropped to idle positions. Connected to the general operator to be rotated thereby is a cam-disk 245, having a vnotch 243 in which'normally rests a roller 241. The general operator 45 is reciprocated by means of the usual racks, see the aforesaid Hart Pat- As seen in Figure 1, there may mesh withone of said reciprocated racks 232 a gear 233 fastened to a shaft 234, to which the cam-disk 245 is also fastened. The shaft 234 may be journaled at one end in the side of the adding-machine base 32, the other end being journaled in a bracket (not shown) rising from the platform 31. The gear is sumciently large to rotate the shaft 234, and hence the cam-disk 245, in less than a complete revolution during the movement of the general-operator rack 232 in either direction, thereby providing that the roller 241 may only be entered in the notch 243 when the general operator 45 is in its normal position.

At the cycling of the general operator, the disk 245 moves and the roller 241 is forced out of the notch, swinging rearwardly arm 243 provided upon rock-shaft 249; and upon the latter is an arm 248, which, as seen in Figure l, by means of a link 250, vibrates rearwardly a frame 25l, which is hinged at its bottom end at 252. This frame 25| includes a cross-plate 253 joining the side arms of the frame 25l, and has at its top a rearwardly-bent flange provided with a comb 254 for the upper ends of the standing links 91, said links being retained by a comb-plate 255, Figure 8. When the frame 25! is swung rearwardly, all of the links 91 are swung away from the links 95, and all of the cam-plates 93 drop.

At the same time cross-bar 253, which connects arms 251 of said swing frame 25l, swings up under the arms-93 of the register-selecting frames and lifts said arms 93, thereby dropping the arms 99, together with all the elevated bails 31, "and the couplers 63 The bails may rest upon blocks 251', Figure 15. Such swinging back of the links 91 at this time is provided for, so that in case any zone-cam 93should be held depressed by a block 2 at the moment, all of the links 91 will nevertheless be free to rise when the cross-bar 253 lifts the arms 93 that carry said links 91. Furthermore the swinging back of the links 91 causes the zone cams 93 to drop clear of the teeth 94, thus facilitating a carriage return or tabulating movement in case the latter occurs during cycling.

The coupling bails 31, 39 remain depressed throughout the remainder of the cycling of the general operator, and if thecycling occurs just after the carriage has left a computing zone, until the paper-carriage 25 advances to a new computing zone when the balls required for said new zone will be raised. During the final portion of the cycling of the general operator, a spring 253 may return arm 243 and restore roller 241 to the notch 245 as the latter returns to its normal will consequently return to normal position with the frame 25I, 253, 251. Springs 259, Figure 8, one on each side of a cross-plate 253' of the vertical swinging frame 25f, may restore the latter to normal position, bringing the links 91 forwardly, and by acting upon cams 259 upon the adjustable heads 95 carried by the bottom ends of the thrust rods 95,

controlled thereby;

may cam all of the latter upwardly.-

however,

the carriage has not yet left the computing zone,

and one or more of the zone-cams I! still remain depressed, the springs may become eiiective upon the movement of the carriage out of the present computing none, whereupon the registerselecting blade or tooth It will escape from the depressed cam-plate l3, and the springs 25! will earn upwardly to normal positions the rods ll together with the depressed cam-plates it. If, however, a blade I should happen to be in effective position, the plate II cannot be raised, but the springs 25! may react to cam down idly the links 81 temp rarily. lifting the bails U1.

The typewriting machine i2! can be lifted 01! from the adding-machine base 82. upon which it is located by means of studs-2", and held down by removable screw-clamps 2, Figure 3. In i liitingthe typewriting machine, the rods as and I1 lift of! from the lower links 91, CI, and the operating key-links l2 lift away from the arms 33, so that all the lines of connection between the typewriter and the adding machine are self-disconnecting: and upon restoring the typewriting machine, the studs 2" serve to relocate the parts as, 51, 32 relatively to the related adding mechanism.

The top. ends of the standing rods 01 may be provided'with rolls 2, Figure 7', for engaging the cams 260 on the zone-rods 85, to give ease in camming up the latter by the springs :59.-

During the tabulating operation all of the jacks I! are dropped, as at Figure 9, to clear the tappets 48. The Jacks 49 all rise from the Fig- I ure 9 position to the Figure 11 position when the carriage is being re-engaged with its escapementmechanism. At Figures!) and 11 is illustrated the operation at the conclusion of a tabulating jump of the carriage. The carriage, which is moving towards the left, is preliminarily arrested by the contact of'eolumn-stop I20 with the upwardly-projected decimal-stop H9, as seen at Figure 9. Upon restoration of the carriage to the control of its escapement-mechanism in the usual manner, the carriage advances again, having at this time a very slight movement towards the left. This movement is much less than the pitch of the jacks, i. e., less than a letter-space interval. At Figure 11 is indicated the position of the carriage-after it has made said slight movement, and has been restored to the control of the letter-feeding mechanism. At Figure 11 the position of the tappet 48 at this time is shown in full lines; but the position of said tappet is also shown in dot-and-dash lines at Figure 11 to represent the tabulating or temporarily held pomtion seen at Figure 9. At Figure 11, in moving from the dotted-line position tothe full-line position, the tappet 48 cams down one of the jacks 4s and comes to rest on the top I16 of the jack, where it is held during the subsequent operation of the figure type-key.

Figure 10 represents the position reached by the register-selecting block 2 when the carriage is tabulated to the position seen at Figure 9. The cam-plate a: is depressed by its blade 94 before the jacks I! are restored from the Figure 9 position to the Figure 11 position.

It is usual in the Underwood bookkeeping machine (see patent to Hart 1,270,411) for keylocking stems 266 to co-operate with a'transverse set of tumblers 281 to enable any digit-key to look all of the remaining digit-keys against actuation. According to the present improvements, there is a connection from the arm 248' that also I ends of the links 63.

This connection includes a link 2, operating an arm 2 upon a rock-shaft 210. Also upon said "rock-shaft is arranged an arm 2", having a pinand-slot connection to the rear end of a link 212, 5

whose forward end is pivoted to an arm 21!, hav-' ing a. toe or interponent 214 to spread or operate the transverse row of tumblers ill to'lock the keys. The arm 2 is yieldingly connected by a pull spring 215 to said link 212. Upon the restoration of the arm 2- to normal position, the springs 258 and 21", Figure l, restore the described key-locking train to normal position, Figure 3.

In practicing the present invention, there are preferably left punctuation-spaces to separate the groups of numerals that form a number. At

. such punctuation-spaces jacks 40 may be'omitted. It is preferred, however, to supply their places with key-locking lacks, which are similar to the Jacks is, thus forming an unbroken row of jacks,asatFlgure 8. Therod" thatlsoperated by each key-locking jack thrusts down a key-locking rod 210, Figure 1; these rods 21! at. their lower ends being connected to arms 211 that are ilxed upon the rock-shaft 210, carrying-the key-lock operating arm 21L At every punctuation-space the digitkeys are hence locked against actuation.

The movements of the swinging frame 2 for ac dropping the zone cams 83 are limited by means of a stop 25", Figure 8, playing in a slot in an arm 21; of a subi'rame or bracket, which includes also an opposite arm 210, Figure 8, these arms being connected by a cross-plate 280. swinging frame 25! is arranged between said arms '2", 219. The vertical cross-plate 2" is formed at its top' with a forward ledge ill, upon which is fastened the guide-comb as for the upper Variations may be resorted to within the scope of the invention, and portions of the improvements may be. used without others.

Having thus described my invention, I claim:

1. In a combined typewriting and computing 41 machine having a carriage and a series of registers, each register having agroup of index pinbars, a set of horizontal denominational rockshafts extending across the machine, distributing arms operated by said rock-shafts and arranged in groups, one set of arms for each set of pin-bars, each rock-shaft also having a single master-arm 'whereby it is operated, a row of connections for operating said master-arms, a

carriage-tappet, jacks operable by said tappet 5 for actuating said connections, rock-shafts and pin-bars, preparatory to a digit-indexing operation, sets 0! couplers operable by said distribute ing arms, and means carried by the carriage to shift the sets of couplers into and out of use a selectively, each coupler being shiftable relatively to its pin-bar.

2. In a combined typewriting and computing machine having a carriage and a series of registers, each register having a group of index pin- 11 bars, a set of. denominational rock-shafts extending across the machine, distributing arms upon said rock-shafts and arranged in groups, one set of arms for each set of pinebars, each rock-shaft also having a single master-arm 1 whereby it is operated, said master-arms at their rear ends forming a transverse row, a row of connections for operating said master-arms, a carriage-tappet, lacks operable by said tappet for actuating said connections, rock-shafts 'and 1 Bahia:

3. In a combined typewriting and computing machine having a carriage and a series of registers, each register having a group of index pin-bars, a set of denominational rock-shafts extending across the machine, distributing arms upon said rock-shafts and arranged in groups, one set of arms for each set 01 pin-bars, each rock-shaft also having a single master-arm whereby it is operated, connections for operating said master-arms, a carriage-tappet, jacks operable by said tappet for actuating said connections, rock-shafts and pin-bars, preparatory to a digit-indexing operation, each rock-shaft carrying one distributing arm for each register, normally disabled groups of couplers connected to said distributing arms, a shifting device, and means upon the carriage to act upon said shifting device to bring any group of couplers ,into

co-operation wi't li -,its associated pin-bars.

4. In a combined typewriting and computing machine having a carriage and a series of registers, each register having a group of index pin-bars, a set of denominational rock-shafts extending across the machine, distributing arms upon said rock-shafts and arranged in groups, one set of arms for each set of pin-bars, each rock-shaft also having a single master-arm whereby it is operated, connections for operating said master-arms, a carriage-tappet, jacks operable by said tappet for actuating said connections, rock-shafts and pin-bars, preparatory to a digit-indexing operation, groups of coupiers normally lying depressed and passing under the rear ends of the pin-bars when operated, and a system of yokes for lifting and depressing said couplers, each yoke including a transverse bar having guide-holes for the couplers, and also including arms forming a pivoted bail, each yoke being universal to its set of couplers and forming a part of a register-selecting train extending to the carriage, and means on the carriage to operate the train to lift the group of couplers selectively into eifective position, and

to maintain the couplers elevated throughout the traverse of the computing zone by the carriage.

5. In a combined typewriting and computing machine having a traveling carriage, a series of registers and digit-indexing means, the combination of a row of jacks in the form of shouldered slides, means to guide said slides, and a tappet mounted upon the carriage to displace the jacks seriatim, said machine having a stop-plate with guides for said slides, and the latter provided at their lower ends with stems, a plate having guide-holes for said stems, a row of rods operable by said jacks, means to guide theupper ends of the rods, adjustable heads upon the lower ends of the rods, means for guiding said heads, a row of links under said rods and depressible thereby, rock-arms to which the links are pii'zoted at their lower ends, rock-shafts to which said rock-arms are individually fastened, distributing arms grouped upon said rock-shafts,

index pin-bars. forming groups, one group for each group of distributing arms, couplers pivoted to the lower ends of said pendent distributing tory to a digit-indexing operation, and means to bring the diflerent sets of couplers into use selectively, whereby one pin-index bar in every group having the same denomination as the jack may be set forward by the selected couplers.

6. In a combined typewriting and computing machine, the combination with a series of registers and a traveling carriage, of a tappet on the carriage, a set of denominatiomselecting jacks, a row of rods operable thereby, a set of transverse rock-shafts having master-arms operable by said rods, said rock-shafts having a downwardly and rearwardly inclined echelon formation, distributing arms of graduated lengths, there being one distributing arm on each rock-shaft for each register, a set of index pinbars for each register, groups of normally idle couplers forming a transverse row between the distributing arms and the pin-bars, the couplers in each group being 01 graduated lengths, said master-arms being also 01' graduated lengths, the denominational order of the distributing arms being the reverse of the order of the master-arms, the lower ends of the distributing arms terminating about evenly, the proportions of the masterarms and distributing arms being maintained throughout the system, and equal movements of the jacks producing equal advances of the indexpin bars, and means for bringing the groups of couplers into use selectively.

'7. In a combined typewriting and computing machine having a series ofregisters and a car riage, the combination of denomination-selecting jacks forming parts of trains each ramifying to the different registers, register-selecting camplates, and a tabulator-mechanism including a column-stop on the carriage, said column-stop forming part of an adjustable unit which also includes a denomination-selecting tappet and a register-selecting tooth, said unit and tooth being arranged for diiierential location of the tooth on the unit at will, the parts being arranged so that the carriage is arrested by the column-stop in position for operation of a denomination-jack by the tappet and for the depression of the camplate selected by the tooth.

8. In a combined typewriting and computing machine having a series of registers and a carriage, the combination of denomination-selecting jacks forming parts of trains each ramifying to the different registers, a stationary group of register-selecting cam-plates mounted face to face, racks upon the carriage, and elongate units each mounted on said racks and bridgingthe same, each unit having a cam-plate operating tooth,

.and also having a column-stop device forked at inational jack-selecting tappet between the column stop and the register-selecting tooth, said arms for operating said index pin bars preparaunit having locating means to engage the notches in the other rack, and having the column-stop, the denominational jack-selecting tappet and the register-selecting tooth arranged along the bottom thereof, said other rack and the unit-locating means co-operating therewith being disposed at the top of said unit.

9. A device formed for adjustment along the carriage of a combined typewriting and computing machine, said device being in the form of an elongate structure and having on one -elongate side a tabulating tooth, and also having on one 1 side a denomination-selecting tappet; and also provided with notches to removably receive register-selecting teeth, said tappet being between the tabulating tooth and the notches.

10. A device formed for adjustment along the carriage of a combined typewriting and computing machine, said device being in the form or an elongate structure and having on one elongate side a tabulating tooth, and also having on said side a denomination-selecting tappet, and also provided with notches to removablyreceive register-selecting teeth, a steadying ridge being provided upon the side 01' said structure opposite said notches, to lit in the notches 01' a supporting rack on the typewriter-carriage.

11. A unit formed for adjustment along the carriage of a combined typewriting and computing machine, said unit being in the form 01' an elongate structure and having on one elongate side a tabulating tooth, and also having on said side a denomination-selecting tappet, and also provided with notches to removably receive register-selecting teeth, a steadying ridge being provided upon the side 01' said structure opposite said notches, to fit in the notches of a supporting rack on the typewriter-carriage, said unit also having a key-formation to fit upon a stationary guide in the vicinity of the computing zone oi the I machine.

12. In a combined typewriting and computing machine having a series of registers and a carriage, the combination oi denomination-selecting jacks ,forming parts of trains each ramifying to the different registers, register-selecting camplates, and a tabulator-mechanism including a column-stop on the carriage, said column-stop forming part of an adjustable unit which also includes a denomination-selecting tappet and a register-selecting tooth, the parts being arranged so that the carriage is arrested by the columnstop in position for operation of a denominationjack by the tappet and for the depression the selected cam-plate by the tooth, aflxed horizontal guide or key being mounted in' proximity to the computing zone, each unit having a notch in its rear end which fits upon said key while the carriage is traversing the computing zone, to

insure proper co-operation oi the unit with the register-selecting cams and the denominationjacks.

13. In a combined typewriting and computing machine having registers, a carriage, tabulating mechanism and indexing mechanism, the combination of a key on said machine at the .rear of said carriage, said key extending in the direction of the travel of the carriage, and a tabulating and denomination-selecting unit upon said carriage having a sliding fit upon said key to insure the proper engagement and accurate co-operation of the denomination-selecting unit with the Jacks throughout the computing zone.

14. A combined typewriting and computing machine having a computing base provided with registers, the typewriting machine detachably mounted upon the base, a set of carriage-controlled denomination trains descending from the carriage into the computing base, and including upper and lower combined sets of thrust rods, the upper rods being separable from the lower rods, a register-selecting set of trains extending down from the carriage into the computing base, and including upper and lower sets of rods, one set separable from the other, the separation of all 01' said rods permitting the typewriting machine to be lifted off from the computing base,

I ters,

each upper rod extending down at the back 01! the typewriting machine, vand each lower rod extending up from the base, rod-guiding means for the upper and lower sets oi rods, the guiding means for the upper rods being on the typewriting machine and the guiding means for the lower rods being on said base, for maintaining the joining ends of all the rods of the upper and lower sets in normal alignment, and means for detachably fastening the typewriter upon the base 15. In a combined typewriting and computing machine having a carriage and a series of registers, each register having a group of index-pinbars, a set of horizontal denominational rockshafts extending across the machine, a row oi distributing arms depending from said rockshafts and arranged in groups, one set of arms for each set 01' pin-bars, each rock-shaft also having a single rearwardly-extending masterarm whereby it is operated, said master-arms at their rear ends forming a transverse row, a row of connections for operating said master-arms, a carriage tappet, Jacks operable by said tappet for actuating said connections, rock-shafts and pin-bars preparatory to a digit-indexing operation, each of said connections being made in portions, and automatic devices for separating one portion from the other to permit the jacks to drop out of the way of the carriage-tappet.

16. In a combined typewriting and computing machine having a traveling carriage,a register and digit-indexing means, the combination of a row of Jacks in the form of slides, means to guide said slides, a tappet upon the carriage to displace the slides seriatim, said slide-guiding means including an upper plate on the" machine with guides for said slides, and the latter provided at their lower ends with stems, said guiding-means including a lower plate having guide-holes for said stems, a jointed thrust-rod operable by each jack, arms displaceable by said rods, each rod made in two parts to permit separation of the parts when required, means for maintaining the jointed ends of the rods in alignment and index pin-bars operable by said arms.

17. In a combined typewriting and computing machine having a carriage and a series of regiseach register having a'group of index pinbars, a set 0! horizontal denominational rockshafts extending across the machine, a row of distributing arms depending from said rockshafts and arranged in groups, one set of arms for each set of pin-bars, each rock-shaft also having a single rearwardly-extending master-arm whereby it is operated, said master-arms at their rear ends forming a transverse row, a row of connections for operating said master-arms, a carriage-tappet, jacks operable by said tappet for actuating said connections, rock-shafts and pinbars, preparatory to a digit-indexing operation, a base-plate, and brackets erected upon said base-plate at its ends, other brackets between its ends, said rock-shafts journaled in said brackets, the end brackets having holes for the rock-shafts and also having outside confining plates covering the ends of the rock-shafts, and the intervening brackets having open slots permitting detachment of the rock-shafts, each rock-shaft having a spherical depression or seat, and a ball fitted therein, and each rock-arm being pinched upon the ball and soldered.

18. In a combined typewriting and computing machine having a carriage and a series of registers, each register having a group 01' index pinarias-go bars, a set of horizontal denominational rockshai'ts extending across the machine, a row of distributing arms depending from said rockshaits and arranged in groups, one set of arms for each set of pin-bars, each rock-shaft also having a single rearwardly-extending master-arm whereby it is operated, said master-arms at their rear endsiorming a transverse row, a row of connections for operating said master-arms, a carriage-tappet, jacks operable by said tappet for actuating said connections, rock-shafts and pinbars, preparatory to a digit-indexing operation,

groups 01' couplers normally lying depressed and passing under the rear ends of the pin-bars when operated, a system of yokes for lifting and depressing said couplers, each yoke including a piers, and also including arms forming a pivoted bail, each yoke being universal to its set of couplers and forming a part of a register-selectin train, means on the carriage to selectively operate the trains, to lift the groups of couplers into effective position, and to maintain the couplers elevated throughout the traverse of the computing zone by the carriage, and stops upon said couplers to arrest them at the driving movements, said stops formed to encounter the yokes which carry said couplers, said pin-bars having beveled portions below the points at which the pin-bars are engaged by the driving couplers.

19. In a combined typewriting and computing machine having a carriage and a series of registers, each register having a group of index pinbars, a set oi denominational rock-shafts extending across the machine, distributing arms upon said rock-shafts and arranged in groups, one set of arms for each set of pin-bars, each rock-shaft also having a single master-arm whereby it is operated, connections ior operating said masterarms, a carriage-tappet, jacks operable by said tappet for actuating said connections, rockshafts and pin-bars, preparatory to a digit-indexing operation, groups of couplers normally lying depressed and passing under the rear ends of the pin-bars when operated, and a system of yokes for lifting and depressing said couplers.

20. In a combined typewriting and computing machine, the combination with a series of registers and a traveling carriage, of a tappet on the carriage, a set of denomination-selecting 'Ja'cks, a row of rods operable thereby, a set of transverse rock-shafts having master-arms operable by said rods, said rock-shafts having a downwardly and rearwardly, inclined echelon formation, a row oi distributing arms, there being one distributing arm on each rock-shaft for each register, a set or index pin-bars for each register, groupsof normally idle individual couplers distinct from said pin-bars and forming a transverse row between the distributing arms and'the pin-bars, the denominational order of the distributing arms being the reverse of the order of the master-arms, equal movements of the jacks producing equal advances of the index pin-bars, and means controlled by a device on the carriage for bringing the groups of couplers into use selectively while the pin-bars remain stationary.

21; In a combined typewriting and computing machine, the combination with a plurality of mg isters and groups of index pin-bars co-operative therewith, and a carriage, of non-traveling camplates individually mounted in a stationary group in the computing zone and each extending the length of said zone,'there being only one campiate for each register, each cam-plate movable independently oi the others, adjustable units on the carriage having 'diiierent groupings of teeth for moving the cam-plates selectively, adjustable universal carriage-tappets, denominational trains all operable by any of said carriage tappets, and means actuated by said cam-plates for bringing different groups of pin-bars under control of any one of said denominational tappets.

22. Ina combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, a set oi! ramifying denominational trains, having sets of couplers to enable said set of trains to control a plurality of sets of indexing devices, said couplers normally disconnected from said indexing devices, a set of cam-plates individually mounted in a stationary transverse bar having guide holes for the cougroup in the computing zone and each extending the length of said zone, there being only one camplate for each register, each cam-platemovable independently of the others, adjustable units on the carriage having different groupings of teeth for moving the cam-plates selectively, operating trains extending from the cam-plates, bails operable by said cam-plate trains and effective to move said coupler sets to effective position relatively to the indexing devices, and a series of carriage-tappets each capable of operating all of said denomination trains.

23. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, denominational trains all operable in each computing zone by means on the carriage, and having sets of couplers to control any plurality of sets of indexing devices in any zone, a stationary group of cam-plates selectively operable by means on the carriage, operating trains extending from the cam-plates and including downwardly-thrusting rods forming a row and also including lever-arms placed side by side and operable by said rods, and nested rocking devices operable each independently of the others and connecting said arms to couple-operating means including shiitable bails disposed at properly spaced points across the machine, some of said rocking devices being in the form of balls, and others being in the form of rock-shafts upon which the bails are pivoted, said rock-shafts being rockable independently of the balls.

24. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, a series of tappets, a set 01' ramifying denominational trains operable by each of the tappets, one'tappet at a time, and having sets of normally disconnected couplers for enabling said trains to control selectively any plurality of sets 0! indexing devices, a set of camplates individually mounted in a group in the computing zone and each extending the length of said zone, there being only one cam-plate for each register, each cam-plate movable independently of the others, and adjustable units on the carriage having different groupings of teeth for moving the cam-plates selectively, operating trains extending from the cam-plates, said operating trains including bails operable by said camplates, said couplers being controlled by said balls.

25. In a combined typewriting and computing machine having a series of registers and a letterfeeding carriage, a stationary group of registerselecting plates, trains operable, either singly or in any plurality, by said plates, denominationselecting trains having a set of jacks located between the said register-selecting plates and the carriage, means adjustable on the carriage for depressing the register-selecting plates throughplate for each register, and said teeth being dis-' ing machine, said unit being in the form of an carriage for depressing the denomination-selecting jacks seriatim as the carriage feeds through the computing zone, said reglster-selecting plates being detachably mounted face to face directly upon the machine-frame in an accessible position in rear of the carriage and the set of denominational jacks.

26. In a combined typewriting and computing machine having a group of registers, sets of indexing devices therefor, a carriage, a series of universal tappets, a set of ramiiying denomination trains all operable by each of the tappets, one tappet atatime, and having sets oi. couplers, each set of couplers being shiftable relatively to its indexing devices, to enable said set of trains to control selectively a plurality of sets of indexing devices, a stationary group of cam-plates all mounted face to face in the computing zone to be shiftable independently 01' one another andhaving means to control the condition of the individual sets of couplers, and a plurality of teeth upon the carriage for operating a plurality oi cam-plates simultaneously, there being only one cam-plate for each register, and said teeth being distinct from said tappets, and capable of holding the cam-plates depressed throughout the computing zone.

27. In a combined typewriting and computing machine having a group of registers, sets of indexing devices therefor, a carriage, a series of universal tappets, a set of ramiiying denominational trains all operable by each of the tappets, one tappet at a time, and having sets 01' couplers shiftable thereby while the indexing devices are stationary, to enable said set of trains to control selectively a plurality oi sets of indexing devices, a, stationary group of cam-plates mountedface to face and selectively operable singly or in groups by the carriage, a plurality of teeth upon the carriage for operating a plurality of camplates simultaneously, there being only one camtinct from said tappets, and capable of holding the cam-plates depressed throughout the computing zone, and a group of trains extending from the group of cam-plates, and including leverarms connected to coupler-shifting means, said coupler-shifting means including controller bails disposed at properly spaced points across the machine for shifting the selected sets of couplers.

28. A unit formed for adjustment along the carriage of a combined typewriting and computelongate structure substantially without lateral projections and having on one elongate side a tabulating tooth, and also having on said side a single permanent denomination-selecting tappet, and also provided with notches to removably receive register-selecting teeth, and having means to lock the teeth rigidlyv to said structure, to enable any tooth or teeth to be coordinated with said tappet.

29. In a combined typewriting and computing machine having a series of registers and a carriage, the combination oi denomination-selecting jacks forming parts oi. trains each ramifying to the difierent registers, register-selecting camplates, and a tabulator-mechanism includinga column-stop on the carriage, said column-stop forming part of an adjustable unit which alsoincludes a single denomination-selecting tappet and a set of cam-plate-depressing teeth, said unit and teeth being arranged for varying the number and location of said teeth. the parts being 9,116,870 out the computing zone, and other means on the arranged so that the carriage is arrested by the column-stop in position for operation of a denomination-jack by the tappet and for the depression of the selected cam-plate by a tooth, said single denomination-selecting tappet being distinct from said teeth, and each of said teeth being effective to hold depressed its associated camplate throughout the operation of all the jacks, the adjustable combination unit being supported upon front and rear racks placed one behind the other on the paper-carriage, the unit fitting in notches in both racks, the rear end of the unit having a ridge to insert in the notches in the rear rack.

30. In a combined typewriting and computing machine having registers, a carriage, tabulating mechanism, and indexing mechanism, the combination of a key on said machine at the rear of said carriage, said key extending in the direction of the travel of the carriage, and a tabulating unit upon said carriage having a denominationselecting dog and also having a sliding fit upon said key to insure the proper engagement and puting zone, said unit having a set of registerselecting teeth independent of said dog, registerselecting plates for selective depression by said teeth being mounted upon the machine-frame, each tooth, by co-operation oi. said key and unit, holding its plate accurately depressed throughout the zone.

31. In a combined typewriting and computing machine having a register and also letter-feeding carriage, a set of denominationselecting jacks depressible by a carriage-tappet and an indexing mechanism, the combination with denomination-selecting trains operable by said jacks and including a set of guided rods at one end, means for moving said bar to swing said rods to permit the Jacks to drop, the rods having atthe ends guided by said bar adjustable heads to rest upon the tops of the rods, and means for automatically restoring said bar and thereby restoring the dropped rods and jacks to working positions.

32. A unit formed for adjustment along the carriage of a combined typewriting and computing machine, said unit being in the form of an elongate structure substantially without lateral projections and having on one elongate side a vided with notches to removably receive registerselecting teeth, said unit also having a key-formation to fit upon a stationary guide in the vicinity of the computing zone of the machine.

33. In a combined, typewriting and computing machine having a series 01' registers and a carriage, the combination or denomination-selecting jacks forming parts of trains each ramifying to the difl'erent registers, a stationary group of register-selecting cam-plates, mounted facewise to each other, one plate for each register, register-selecting trains including rods engaged at their upper ends by the register-selecting camplates, said cam-plates being individually detachable and interchangeable, and a set of selective means adjustable along the carriage as a unit,

one or more of said cam-plates depressed throughout the comhaving a isters and groups of index pin-bars co-operative therewith, and a carriage, of a single set of vertical denominational trains, a group of stationary plates, said carriage having means acting upon said plates for bringing diflerent groups of pin-bars under control of said denominational trains, said cam-plates mounted in a pack in rear of the set of verticaldenomination-selecting trains and in proximity thereto, said trains in rear of a set of tabulating stop-rods and in proximity thereto, and adjustable tabulator-stop units associated with said carriage and having tabulating stops at their forward ends and means between their ends for depressing the denomination-selecting trains, and also having adjustable means at their rear ends for depressing sa'd cam-plates, means being provided for steadying said tabulator-stop units for both the plateselecting and the tabulating operations. 1

35. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, a single set of ramiiying denomination jack trains having sets of connections to enable said single set of jacks to control any one or any plurality of sets of indexing devices, a single set of stationary camplates, means to enable said cam-plates to control the condition of, the sets of connections selectively, and a series of devices individually adjustable along the carriage, foroperating as a tabulator-stop, effecting denominational selection, and also operating one or more of said plates for simultaneously effecting single or multiple register-selection.

36. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, a single set of ramifying denomination jack trains, sets of connections to enable said single set of jacks to control a plurality of sets of indexing devices, a set of stationary cam-plates having means to control the condition of any one or more sets of connections, and a series of individually adjustable devices, one for each computing zone of the carriage, for operating as a tabulator-stop, effecting denominational selection, and'also eflecting register-selection, said adjustable devices each including a block having a series of notches, teeth differentially insertable by means of said notches in the block, and releasable means to fasten the inserted teeth, said teeth coacting with the camplates to bring into use any desired registers selectively in the zone for which the block is adjusted along the carriage. I

,37. In a combined typewriting and computing machine having a series of registers and a carriage, the combination of denomination-selecting jacks forming parts of trains each ramifylng from a point adjacent the carriage to the difiere ent registers, a stationary group of register-selecting cam-plates, paired racks upon the carriage, and units each mounted adjustably u on said racks, to engage the teeth of both racks,

each unit having cam-plate-operating teeth, andalso having a column-stop device forked to fit upon one rack, one part of the fork formed'to enter the notches in said one rack, and the other part catching over the top of the same rack, each unit having a beveled denominational-jack-selecting tappet between the column stop and the register-selecting teeth, said unit having locating and steadying means to engage the notches in the other rack.

38. A unit formed for adjustment along the carriage-rack of a combined typewriting and register-selecting cams and hold them depressed throughout a computation. v

39. A unit formed for adjustment along the carriage-rack of a combined typewriting and computing machine, and having a carriage-tabulating tooth, and also having asingle denomination-selecting tappet, and also provided with notches to removably' receive an array of individually settable register-selecting teeth, said single denomination-selecting tappet being distinct from the register-selecting teeth, and the latter being adapted to depress any oneor more register-selecting cams and hold them depressed throughout a computation, said tappet being between the tabulating toothand the notches, and the end opposite said tabulating tooth being formed with guiding and supporting means.

40. A unit formed for individual adjustment along the tabulating-carriage rack of a combined typewriting and computing machine, and having a tabulating tooth for engagement with said rack, and also having a single denomination-selecting tappet, and also provided with a row of notches to receive a set of individually removable registerselecting teeth, a steadying ridge being provided upon the top of said unit to fit in any of the notches of a companion supporting rackon the typewriter-carriage; said single denominationsele'cting tappet being distinct from the registerselecting teeth, and the latter being adapted to depress any one or more register-selecting cams and hold them depressed throughout a computation.

41. A unit formed for adjustment along the carriage of a combined typewriting and computing machine, and having a tabulating tooth, and also provided with notches to receive teeth for depressing register-selecting cams, and also having a single denomination-selecting tappet, distinct from said teeth, for holding corresponding register-selecting cams depressed during the travel of the carriage through a computing zone, a steadying ridge being provided upon the top of said unit to fit in the notches of a supporting rack on the typewriter-carriage, said unit also having a key-way to fit upon a stationary guide in the vicinity of the computing zone.of the machine.

42. A unit formed for adjustment along the carriage of a combined typewriting and comput- -register-selecting cams depressed during the travel of the carriage through a computing zone, said unit also having a key-way to fltupon a stationary guide in the vicinity of'the computing therewith, and a carriage, of a single stationary group of cam-plates,;a singleset of denominational trains operable by means on said carriage and including jacks, and means controlled by said 76 cam-plates for bringing any plurality of groups of pin-bars under control of said denominational trains, said cam-plates parallel with one another and arranged on edge one behind another, and

said carriage having cam-plate-controlling meanstive therewith, and a carriage, of vertically slid-v able cam-plates, denominational trains including a row of thrust-rods and companion jacks in the form of slides, means controlled by said camplates for bringing diflerent groups of pin-bars under control of said denominational trains, said cam-plates mounted adjacent the set of vertical denomination-selecting trains, said trains adjacent a set of tabulating stop-rods, said carriage being equipped with adjustable tabulator-stop units, said units having means for operating the denomination-selecting trains and also having means for selectively operating said cam-plates, said last two means being on the same side of said units and requiring substantial extension of the latter from a rack which locates the units, and means for supporting the outer ends of said units.

45. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, a set 01' ramii'ying denomination jack trains including settable connections to enable said set of jacks to control a plurality of sets of indexing devices, a set of cam-plates having means to control the condition of said settable connections, and adjustable means carried by said carriage, for operating as a tabulator-stop, e1- fecting denominational selection, and also effect- ,ing registerselection, said means being in the form' of a dog on said carriage universally adjustable in itself inrespect to the number and identity of cam-plates to be operated thereby.

46. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, a set of ramifying denomination jack trains including settable connections to enable-said set of jacks to control a plurality of sets of indexing devices, a set of cam-plates having means to control the condition of said settable connections, and adjustable means carried by the carriage, for operating as a tabulator-stop, effecting denominational selection, and also effecting register-selection, said adjustable means including a block carried by the carriage and having a series of notches, teeth differentially 'insertable in the block for actuating a certain cam plate or plates, to bring into use any desired registers in the zone for which the block is adjusted along the carriage, and means for removably fastening the teeth.

47. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, a set of ramifying denomination jack trains including settable connections to enable said set of jack trains to control a plurality I of sets of indexing devices, a stationary set of cam plates grouped face to face in the computing zone and having means to control the condition of said settable connections, and teeth mounted on the carriage for selecting the registers, the teeth operating on said cam-plates and being removable from the carriage so as to leave any desired register out of use in any adding zone of the work-sheet, said teeth operating simultaneously to couple the selected sets of indexing devices to the denominational trains, so that any number being typed may be run into all of the selected registers.

48. In a combined typewriting and computing machine having a register and also having a letter-feeding carriage, a set of denomination-selecting jacks depressible by means on the carriage, and an indexing mechanism, the combination with denomination-selecting trains operable by said jacks and including a set of guided rods engaged by said jacks, of a displaceable bar for guiding said rods at one end, means for moving said bar to swing said rods to permit the jacks to drop, said trains. including separate links pressed down by the rods seriatim, during the travel of the carriage, the rods having adjustable heads to rest upon the tops of the links, the lower ends of said heads being beveled, and the upper ends of the lower links being also beveled, and means whereby said bar is automatically restored to cam up the upper rods by means of said bevels.

49. In a combined typewriting and computing machine having a set of registers, a carriage, indexing mechanism, and a general operator, the combination with denomination trains ramifying from the carriage to different indexing mechanism divisions for the various registers, registerselecting means for selectively rendering said divisions eilective, said means including a set of register-controlling cam-plates depressible by means on the carriage, mechanism controlled by the general operator for causing the cam-plates to drop idly, said mechanism including a swing frame in which are guided links supporting said cam-plates, a cross-bar on said swing frame to swing up under arms -98 supporting said links, said cross-bar operating-to lift said arms 98 and drop companion arms 99 together with elevated balls and denomination-selecting couplers controlled thereby; said bails remaining depressed throughout the remainder of the cycling of the general operator and until the carriage advances to a new computing zone, a disk being connected to be revolved by the general operator, said disk having a notch, a spring follower to run upon said disk and fall into said notch, and a spring to restore said follower to the notchto return the frame 25L I53 and associated parts to normal position, said follower being connected to said frame.

50. In a combined typewriting and computing machine having a set of registers, a carriage and indexing mechanism, the combination with a general operator for the computing mechanism, and denomination trains ramii'ying from the carriage to the various registers, of register-selecting means including a set of cam-plates, one for each register, means carried by the carriage for selecting said cam-plates, trains descending from said cam-plates, register-operating elements, said denomination trains including upper and lower rods, the upper rods resting on the lower rods, and means controlled by the general operator for swinging the lower rods rearwardly, the latter having beveled tops, and the upper rods having beveled bottoms, whereby the swinging of the lower rods drops the upper rods together with the cam-plates. i

51. In a combined typewriting and computing machine having registers, sets of indexing devices therefor, a carriage, an adjustable carriagetapp t, a set oi ramiiying denomination trains 

